diff --git a/pkgs/development/ocaml-modules/lwt/default.nix b/pkgs/development/ocaml-modules/lwt/default.nix
index 4033336ae11..167df30ae35 100644
--- a/pkgs/development/ocaml-modules/lwt/default.nix
+++ b/pkgs/development/ocaml-modules/lwt/default.nix
@@ -4,7 +4,7 @@
 
 buildDunePackage rec {
   pname = "lwt";
-  version = "5.6.1";
+  version = "5.7.0";
 
   minimalOCamlVersion = "4.08";
 
@@ -12,16 +12,9 @@ buildDunePackage rec {
     owner = "ocsigen";
     repo = "lwt";
     rev = version;
-    sha256 = "sha256-XstKs0tMwliCyXnP0Vzi5WC27HKJGnATUYtbbQmH1TE=";
+    hash = "sha256-o0wPK6dPdnsr/LzwcSwbIGcL85wkDjdFuEcAxuS/UEs=";
   };
 
-  postPatch = lib.optionalString (lib.versionAtLeast ocaml.version "5.0") ''
-    substituteInPlace src/core/dune \
-      --replace "(libraries bytes)" ""
-    substituteInPlace src/unix/dune \
-      --replace "libraries bigarray lwt" "libraries lwt"
-  '';
-
   nativeBuildInputs = [ cppo ];
   buildInputs = [ dune-configurator ];
   propagatedBuildInputs = [ libev ocplib-endian ];